Therapeutic vibrator.



A. J. SEAMAN. THERAPEUTIC VIBRATOR. APPLICATION FILED OCT-10, I91 3. RENEWED JUNE 28. I9! 5.

1,168,338.. Patented Jan.18, 1916.

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THB COLUMBIA PLAlyounAvl-l c0" WASHINGTON, u. c,

ALBERT J. SEAMAN,,OF BOSTON, MASSACHUSETTS.

THERAPEUTIC VIBRATOR.

Specification of Letters Patent.

Patented J an. 18, 1918.

Application filed October 20, 1913, Serial No. 796,103. Renewed June 28, 1915. Serial No. 36,906.

1 b all whom it may concern:

Be it known that I, ALBERT J. SEAMAN, a citizen of the Jnited States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Therapeutic Vibrators. of which the following is a specification, reference being had to the accompanying drawings, formin part thereof;

This invention has reference to improve ments in hand operated vibrator devices used in therapeutics.

One object of the invention is to provide a simple knock down therapeutic vibrator adapted to be packed in small compass, the parts of which may be readily assembled.

Another obiect of the invention is to improve the construction of the vibrator head relative to its balance weight or member.

Another object of the invention is to improve the construction of the vibrator head relative to the attachment thereto of the applicator.

Other objects of the invention will appear from the following description.

The invention consists in such novel features of construction and combination of parts as shall hereinafter be more fully described and pointed out in the claim.

Figure 1, represents a side elevation of the improved vibrator parts of the same being broken away. Fig. 2, represents an enlarged sectional view of the head taken on line 22 Fig. 1. Fig. 3, represents a ver' tical sectional view of the vibrator head and related parts as taken on line 33 Fig. 2. Fin. 4, represents an enlarged sectional view of the operating o driving mechanism as taken on line 44 Fi 1. Fig. 5, represents a sectional view taken on line 55 Fig. 4 showin details of the awl and ratchet con neetion between the crank disk and the drivin gear member.

Similar characters of reference designate corres onding parts th oughout.

In the simple embodiment of this invention disclosed in the drawings the improved vibrator com rises the handle member 6 havin the socket 7 ada ted to be removably secured to the sc ew stud 8 of the drive gear casing 9 wh ch latter has the sleeve 10 disposed d amet ically to the stud 8 and adapted to remova lv receive the tubular post 11 having the vibrator head or casing 12 having the series of radially extending screw threaded sockets 13, 13 and, preferably, the cover member 14. f

The drive gear casing 9 has the substan tially circular wall 9 and the axially dis posed bearing 9 while the open side of said casing 9 isnormallv closed by the closure plate 15 secured to said wall 9 and having the annular wall 16 provided with the annular rack 17. Journaled in a bearing of said closure plate 15 is the driving shaft 18 having at its inner end the disk 19 and having at its outer end the squared shoulder 20 adapted to receive an opening of similar shape in the crank arm 21 which latter is secured in place by the thumb screw 22. Pivotally mounted on the stud 23 extending from disk 19 isthe pawl 24 which engages with the teeth on the periphery of hub 25 of pinion plate 26 having a series of studs 27, 27 on which are journaled the pinions 28, 28 meshing with the internal teeth of rack 17 while the axially disposed spindle 29 of such plate 26 is engaged with the bearing or socket 9 of the casing 9 and receives thebearing sleeve 30 of the large bevel gear 31, the pinion teeth on said collar 30 being engaged with the pinions 28 so that the speed of the gear 31 is proportionate to the diameters of the toothed sleeve 30, the pinions 28, 28 and rack 17.

Journaled in the post 11 is the shaft 32 having at one end the bevel pinion 33 adapted, when said post 11 is seated in its socket 10, to engage with the bevel gear 31 while the upper end of this shaft 32 terminates in the squared shoulder 34 having the stud 35. On said squared shoulder 34 is engaged the sleeve 36 of the disk rotor 37 having the weighted rim 38 which for approximately one half its circumference has the channel 39 whereby this rotor 37 is out of balance. On the stud is pivotally mounted the arm 40 having the segmental balance weight 41 closely fitting at the inner side of the rim 38 and preferably of a size corresponding to the dimensions of the channel 39 and of a weight approximating the weightof material displaced or removed by the formation of such channel. Arm 40 is secured in place by the thumb nut 42 screwed onto stud 35.

The face of the rim 38 is preferably graduated as shown in Fig. 2 to facilitate the adjustment of the balance weight 41 to predetermined positions relative to the channel 39. With the weight 41 in the position shown in Fig. 2' the rotor 37 is approXimately balanced and the rapid rotation of said rotor will not result in any material vibration of said rotor and the head or case 12 but if such weight 41 be swung around stud 35 from the position shown in said Fig. 2, said rotor will be out of balance more or less depending on the point to which said weight is swung so that the rapid rotation of shaft 32 and the rotor will effect a vibration of the header casing 12 which vibration may be transmitted therapeutically by the applicator 43 having the stem tt screwed into any one of the sockets 13, 13 of the head 12. This applicator 43 may be of any Well known shape, construction and material and an assortment of such applicators all having stems 44- may be supplied with each machine. Having thus described my invention I claim as new'and desire to secure by Letters Patent. A vibrator of the nature described com Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

prising a drive gear case having a socket, a I

bevel gear rotatable in said case, means to drive said gear at a high speed, a sleeve removably secured in said socket and having a vibrator head having a series of radial sockets, a shaft journaled in said sleeve and having at one end a pinion engaged with said bevel gear and at the other end a square shoulder having an axial stud, a rotor rotatable within said head and having a weighted rim channeled for a portion of its circumference and an axial sleeve engaged with the square shoulder of said shaft, a radial member having at its outer end a segmental balance weight to closely fit said rotor rim, said member pivotally engaged with said shaft stud, and a thumb screw engaged with said stud to secure said member in adjusted position.

. ALBERT J. SEAMAN. Vitnesses:

HENRY J. MILLER, ESTHER C. MURPHY.

Washington, D. (1. 

